Y Ball Nut

Preloaded Y Axis Nut

Preloaded_Y_Axis_Nut

The preloaded Y axis nut attached to the Y Axis nut mount. The spring between the nuts is compressed by screwing the nuts together after they are threaded onto the screw. The channel around the nuts keeps them from rotating relative to each other. The force created by the spring is enough to drive the nuts apart if not constrained by the channel.